Semidiurnal variations in the time scale of irregularities near the Antarctic summer mesopause
Article first published online: 7 DEC 2012
Copyright 1990 by the American Geophysical Union.
Volume 25, Issue 5, pages 997–1003, September-October 1990
How to Cite
1990), Semidiurnal variations in the time scale of irregularities near the Antarctic summer mesopause, Radio Sci., 25(5), 997–1003, doi:10.1029/RS025i005p00997., and (
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 11 OCT 1989
- Manuscript Received: 25 MAY 1989
Measurements from the MF spaced antenna mode radar at Scott Base (78°S, 167°E) include an estimate of the autocorrelation time scale (T0.5) of the scatterers, corrected for advection by the mean wind. Summer observations (December 1983) show a semidiurnal variation of T0.5. At heights of 87–95 km the minimum values of T0.5 occur when the zonal component of the semidiurnal tide is at its westward maximum. If it is assumed that decreasing values of T0.5 are associated with increasing turbulence, then these results are consistent with those of Balsley et al. (1983), who proposed that enhanced turbulence is generated in summer by low-frequency gravity waves and tidal components above the polar mesopause.